Wood structure that is only visible at great magnification is called microstructure. A living cell consists of four parts, namely membrane, protoplasm, cytoplasm and core. Cells are classified according to their function into conductive cells, mechanical cells and storage cells.
The conductive cells serve mainly to transmit nutrients from the roots to the branches and leaves. The mechanical cells impart strength to the wood and the storage cells serve to store and transmit nutrients to the living cells.
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